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Close the socket.
void close(
asio::error_code & ec);
This function is used to close the socket. Any asynchronous send, receive
or connect operations will be cancelled immediately, and will complete
with the asio::error::operation_aborted error.
Set to indicate what error occurred, if any. Note that, even if the function indicates an error, the underlying descriptor is closed.
asio::ip::tcp::socket socket(io_context);
...
asio::error_code ec;
socket.close(ec);
if (ec)
{
// An error occurred.
}
For portable behaviour with respect to graceful closure of a connected
socket, call shutdown() before closing the socket.